Nano Car: World's Smallest Car

Using the parts inside a single molocule, scientists of Rice University have constructed what is the world's smallest car. Slightly wider than a strand of DNA and smaller than strand of human hair this car measures a teeny 4 nanometers across; a single human hair strand measures 80,000 nanometers in diameters.

But, even for the car of this size it has a chasis, freely rotating axles and a pivoting suspension. The wheels are buckyballs, spheres of pure carbon containing 60 atoms a piece. Though it's unlikely you can fit into this car or take a ride, this technology is being built for making nano trucks that can carry payloads.

So maybe the next time around, viruses or bacterias can travel in their nano trucks and cars ;)